./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-44.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-44.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16796499fc39343c4597b6d5b8afaf71194257ba1a30d074f591989e1c38b993 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:59:04,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:59:04,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:59:04,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:59:04,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:59:04,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:59:04,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:59:04,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:59:04,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:59:04,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:59:04,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:59:04,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:59:04,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:59:04,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:59:04,677 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:59:04,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:59:04,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:59:04,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:59:04,679 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:59:04,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:59:04,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:59:04,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:59:04,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:59:04,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:59:04,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:59:04,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:59:04,681 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:59:04,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:59:04,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:59:04,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:59:04,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:59:04,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:59:04,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:59:04,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:59:04,683 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16796499fc39343c4597b6d5b8afaf71194257ba1a30d074f591989e1c38b993 [2024-11-23 22:59:05,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:59:05,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:59:05,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:59:05,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:59:05,108 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:59:05,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-44.i [2024-11-23 22:59:08,882 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/data/22303fd6d/7fc1ffb656a14b89a68810d9cdf68487/FLAG5723778f2 [2024-11-23 22:59:09,206 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:59:09,207 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-44.i [2024-11-23 22:59:09,217 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/data/22303fd6d/7fc1ffb656a14b89a68810d9cdf68487/FLAG5723778f2 [2024-11-23 22:59:09,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/data/22303fd6d/7fc1ffb656a14b89a68810d9cdf68487 [2024-11-23 22:59:09,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:59:09,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:59:09,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:59:09,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:59:09,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:59:09,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4809634c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09, skipping insertion in model container [2024-11-23 22:59:09,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:59:09,490 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-44.i[916,929] [2024-11-23 22:59:09,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:59:09,553 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:59:09,568 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-44.i[916,929] [2024-11-23 22:59:09,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:59:09,627 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:59:09,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09 WrapperNode [2024-11-23 22:59:09,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:59:09,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:59:09,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:59:09,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:59:09,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,700 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2024-11-23 22:59:09,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:59:09,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:59:09,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:59:09,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:59:09,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,742 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 22:59:09,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,749 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:59:09,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:59:09,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:59:09,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:59:09,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (1/1) ... [2024-11-23 22:59:09,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:59:09,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:09,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:59:09,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:59:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:59:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:59:09,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:59:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:59:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:59:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:59:09,954 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:59:09,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:59:10,396 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-23 22:59:10,396 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:59:10,413 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:59:10,414 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:59:10,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:59:10 BoogieIcfgContainer [2024-11-23 22:59:10,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:59:10,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:59:10,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:59:10,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:59:10,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:59:09" (1/3) ... [2024-11-23 22:59:10,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160bf7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:59:10, skipping insertion in model container [2024-11-23 22:59:10,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:09" (2/3) ... [2024-11-23 22:59:10,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160bf7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:59:10, skipping insertion in model container [2024-11-23 22:59:10,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:59:10" (3/3) ... [2024-11-23 22:59:10,426 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-44.i [2024-11-23 22:59:10,444 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:59:10,446 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-44.i that has 2 procedures, 61 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:59:10,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:59:10,571 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@636fd867, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:59:10,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:59:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 22:59:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:59:10,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:10,597 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:10,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:10,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2118972128, now seen corresponding path program 1 times [2024-11-23 22:59:10,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:10,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939817308] [2024-11-23 22:59:10,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:10,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-23 22:59:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939817308] [2024-11-23 22:59:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939817308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517677005] [2024-11-23 22:59:11,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:11,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:11,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:11,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:11,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:59:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:11,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:59:11,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-23 22:59:11,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:11,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517677005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:11,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:59:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959263382] [2024-11-23 22:59:11,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:11,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:59:11,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:11,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:59:11,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:59:11,437 INFO L87 Difference]: Start difference. First operand has 61 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 22:59:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:11,473 INFO L93 Difference]: Finished difference Result 115 states and 201 transitions. [2024-11-23 22:59:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:59:11,478 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2024-11-23 22:59:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:11,491 INFO L225 Difference]: With dead ends: 115 [2024-11-23 22:59:11,491 INFO L226 Difference]: Without dead ends: 57 [2024-11-23 22:59:11,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:59:11,503 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:11,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-23 22:59:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-23 22:59:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 22:59:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 85 transitions. [2024-11-23 22:59:11,562 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 85 transitions. Word has length 140 [2024-11-23 22:59:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:11,562 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 85 transitions. [2024-11-23 22:59:11,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 22:59:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 85 transitions. [2024-11-23 22:59:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:59:11,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:11,571 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:11,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:59:11,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:59:11,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:11,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1672964574, now seen corresponding path program 1 times [2024-11-23 22:59:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170444756] [2024-11-23 22:59:11,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 22:59:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170444756] [2024-11-23 22:59:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170444756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:21,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:59:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497719169] [2024-11-23 22:59:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:21,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:59:21,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:21,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:59:21,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:21,719 INFO L87 Difference]: Start difference. First operand 57 states and 85 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:23,469 INFO L93 Difference]: Finished difference Result 91 states and 126 transitions. [2024-11-23 22:59:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:59:23,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2024-11-23 22:59:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:23,473 INFO L225 Difference]: With dead ends: 91 [2024-11-23 22:59:23,473 INFO L226 Difference]: Without dead ends: 89 [2024-11-23 22:59:23,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:59:23,475 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 42 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:23,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 404 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:59:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-23 22:59:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2024-11-23 22:59:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 22:59:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2024-11-23 22:59:23,505 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 140 [2024-11-23 22:59:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:23,509 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2024-11-23 22:59:23,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2024-11-23 22:59:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:59:23,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:23,514 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:23,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:59:23,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:23,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 102042788, now seen corresponding path program 1 times [2024-11-23 22:59:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145736714] [2024-11-23 22:59:23,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 22:59:23,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:23,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145736714] [2024-11-23 22:59:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145736714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:59:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204181724] [2024-11-23 22:59:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:23,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:23,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:23,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:23,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:23,791 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:23,840 INFO L93 Difference]: Finished difference Result 181 states and 270 transitions. [2024-11-23 22:59:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2024-11-23 22:59:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:23,844 INFO L225 Difference]: With dead ends: 181 [2024-11-23 22:59:23,844 INFO L226 Difference]: Without dead ends: 120 [2024-11-23 22:59:23,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:23,848 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 40 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:23,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 173 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-23 22:59:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2024-11-23 22:59:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 states have internal predecessors, (85), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 22:59:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 177 transitions. [2024-11-23 22:59:23,897 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 177 transitions. Word has length 140 [2024-11-23 22:59:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:23,901 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 177 transitions. [2024-11-23 22:59:23,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 177 transitions. [2024-11-23 22:59:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:59:23,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:23,907 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:23,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:59:23,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:23,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash 368606124, now seen corresponding path program 1 times [2024-11-23 22:59:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045877211] [2024-11-23 22:59:23,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 22:59:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:29,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045877211] [2024-11-23 22:59:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045877211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:29,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:59:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327345898] [2024-11-23 22:59:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:29,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:59:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:29,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:59:29,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:59:29,693 INFO L87 Difference]: Start difference. First operand 118 states and 177 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:31,299 INFO L93 Difference]: Finished difference Result 200 states and 278 transitions. [2024-11-23 22:59:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:59:31,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 141 [2024-11-23 22:59:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:31,304 INFO L225 Difference]: With dead ends: 200 [2024-11-23 22:59:31,304 INFO L226 Difference]: Without dead ends: 198 [2024-11-23 22:59:31,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:59:31,311 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 113 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:31,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 499 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:59:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-23 22:59:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 159. [2024-11-23 22:59:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 104 states have (on average 1.25) internal successors, (130), 106 states have internal predecessors, (130), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:59:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 230 transitions. [2024-11-23 22:59:31,410 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 230 transitions. Word has length 141 [2024-11-23 22:59:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:31,414 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 230 transitions. [2024-11-23 22:59:31,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 230 transitions. [2024-11-23 22:59:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:59:31,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:31,421 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:31,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:59:31,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:31,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1048664494, now seen corresponding path program 1 times [2024-11-23 22:59:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:31,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972787077] [2024-11-23 22:59:31,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:31,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 22:59:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972787077] [2024-11-23 22:59:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972787077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:35,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:59:35,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634715198] [2024-11-23 22:59:35,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:35,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:59:35,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:35,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:59:35,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:59:35,715 INFO L87 Difference]: Start difference. First operand 159 states and 230 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:36,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:36,895 INFO L93 Difference]: Finished difference Result 201 states and 281 transitions. [2024-11-23 22:59:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:59:36,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 141 [2024-11-23 22:59:36,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:36,899 INFO L225 Difference]: With dead ends: 201 [2024-11-23 22:59:36,899 INFO L226 Difference]: Without dead ends: 199 [2024-11-23 22:59:36,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:59:36,901 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 85 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:36,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 500 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:59:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-23 22:59:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 155. [2024-11-23 22:59:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.24) internal successors, (124), 102 states have internal predecessors, (124), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:59:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 224 transitions. [2024-11-23 22:59:36,930 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 224 transitions. Word has length 141 [2024-11-23 22:59:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:36,930 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 224 transitions. [2024-11-23 22:59:36,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 224 transitions. [2024-11-23 22:59:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:59:36,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:36,933 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:36,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:59:36,933 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:36,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash -705617889, now seen corresponding path program 1 times [2024-11-23 22:59:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:36,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290200428] [2024-11-23 22:59:36,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 22:59:37,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290200428] [2024-11-23 22:59:37,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290200428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:37,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:37,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:59:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590914755] [2024-11-23 22:59:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:37,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:37,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:37,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:37,016 INFO L87 Difference]: Start difference. First operand 155 states and 224 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:37,056 INFO L93 Difference]: Finished difference Result 309 states and 447 transitions. [2024-11-23 22:59:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 141 [2024-11-23 22:59:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:37,063 INFO L225 Difference]: With dead ends: 309 [2024-11-23 22:59:37,063 INFO L226 Difference]: Without dead ends: 157 [2024-11-23 22:59:37,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:37,065 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:37,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-23 22:59:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2024-11-23 22:59:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.2) internal successors, (120), 102 states have internal predecessors, (120), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:59:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 220 transitions. [2024-11-23 22:59:37,117 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 220 transitions. Word has length 141 [2024-11-23 22:59:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:37,118 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 220 transitions. [2024-11-23 22:59:37,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 220 transitions. [2024-11-23 22:59:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 22:59:37,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:37,122 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:37,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:59:37,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:37,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash -348586856, now seen corresponding path program 1 times [2024-11-23 22:59:37,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:37,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258657014] [2024-11-23 22:59:37,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:37,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 22:59:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:43,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258657014] [2024-11-23 22:59:43,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258657014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:43,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:43,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:59:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670897664] [2024-11-23 22:59:43,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:43,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:59:43,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:43,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:59:43,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:59:43,654 INFO L87 Difference]: Start difference. First operand 155 states and 220 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:46,163 INFO L93 Difference]: Finished difference Result 180 states and 245 transitions. [2024-11-23 22:59:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:59:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 142 [2024-11-23 22:59:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:46,168 INFO L225 Difference]: With dead ends: 180 [2024-11-23 22:59:46,168 INFO L226 Difference]: Without dead ends: 178 [2024-11-23 22:59:46,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:59:46,172 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 47 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:46,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 467 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:59:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-23 22:59:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 157. [2024-11-23 22:59:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 104 states have internal predecessors, (123), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:59:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 223 transitions. [2024-11-23 22:59:46,215 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 223 transitions. Word has length 142 [2024-11-23 22:59:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:46,216 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 223 transitions. [2024-11-23 22:59:46,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:59:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 223 transitions. [2024-11-23 22:59:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 22:59:46,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:46,219 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:46,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:59:46,219 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:46,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -346739814, now seen corresponding path program 1 times [2024-11-23 22:59:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476377336] [2024-11-23 22:59:46,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:00,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:00,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476377336] [2024-11-23 23:00:00,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476377336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:00,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:00:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369068792] [2024-11-23 23:00:00,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:00,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:00:00,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:00,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:00:00,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:00:00,252 INFO L87 Difference]: Start difference. First operand 157 states and 223 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:04,091 INFO L93 Difference]: Finished difference Result 173 states and 238 transitions. [2024-11-23 23:00:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:00:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 142 [2024-11-23 23:00:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:04,095 INFO L225 Difference]: With dead ends: 173 [2024-11-23 23:00:04,095 INFO L226 Difference]: Without dead ends: 171 [2024-11-23 23:00:04,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:00:04,096 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:04,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:00:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-23 23:00:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 157. [2024-11-23 23:00:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 104 states have internal predecessors, (123), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 223 transitions. [2024-11-23 23:00:04,121 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 223 transitions. Word has length 142 [2024-11-23 23:00:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:04,122 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 223 transitions. [2024-11-23 23:00:04,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 223 transitions. [2024-11-23 23:00:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 23:00:04,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:04,125 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:04,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:00:04,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:04,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash 331471514, now seen corresponding path program 1 times [2024-11-23 23:00:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:04,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274978431] [2024-11-23 23:00:04,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:09,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:09,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274978431] [2024-11-23 23:00:09,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274978431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:09,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:09,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:00:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606639783] [2024-11-23 23:00:09,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:09,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:00:09,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:09,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:00:09,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:00:09,046 INFO L87 Difference]: Start difference. First operand 157 states and 223 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:10,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:10,208 INFO L93 Difference]: Finished difference Result 189 states and 255 transitions. [2024-11-23 23:00:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:00:10,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 142 [2024-11-23 23:00:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:10,211 INFO L225 Difference]: With dead ends: 189 [2024-11-23 23:00:10,211 INFO L226 Difference]: Without dead ends: 187 [2024-11-23 23:00:10,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:00:10,212 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 36 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:10,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 423 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:00:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-23 23:00:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 160. [2024-11-23 23:00:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 105 states have (on average 1.2) internal successors, (126), 107 states have internal predecessors, (126), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 226 transitions. [2024-11-23 23:00:10,237 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 226 transitions. Word has length 142 [2024-11-23 23:00:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:10,237 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 226 transitions. [2024-11-23 23:00:10,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 226 transitions. [2024-11-23 23:00:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 23:00:10,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:10,240 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:10,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:00:10,241 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:10,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash 333318556, now seen corresponding path program 1 times [2024-11-23 23:00:10,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:10,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507010798] [2024-11-23 23:00:10,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:22,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:22,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507010798] [2024-11-23 23:00:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507010798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:22,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:22,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:00:22,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413592348] [2024-11-23 23:00:22,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:22,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:00:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:22,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:00:22,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:00:22,831 INFO L87 Difference]: Start difference. First operand 160 states and 226 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:25,627 INFO L93 Difference]: Finished difference Result 176 states and 241 transitions. [2024-11-23 23:00:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:00:25,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 142 [2024-11-23 23:00:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:25,631 INFO L225 Difference]: With dead ends: 176 [2024-11-23 23:00:25,631 INFO L226 Difference]: Without dead ends: 174 [2024-11-23 23:00:25,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:00:25,633 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 19 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:25,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 426 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:00:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-23 23:00:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 155. [2024-11-23 23:00:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.19) internal successors, (119), 102 states have internal predecessors, (119), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 219 transitions. [2024-11-23 23:00:25,661 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 219 transitions. Word has length 142 [2024-11-23 23:00:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:25,662 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 219 transitions. [2024-11-23 23:00:25,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 219 transitions. [2024-11-23 23:00:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:00:25,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:25,665 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:25,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:00:25,665 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:25,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1199200350, now seen corresponding path program 1 times [2024-11-23 23:00:25,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:25,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358753515] [2024-11-23 23:00:25,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:25,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358753515] [2024-11-23 23:00:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358753515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:31,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:31,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:00:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821008210] [2024-11-23 23:00:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:31,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:00:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:31,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:00:31,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:00:31,335 INFO L87 Difference]: Start difference. First operand 155 states and 219 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:33,365 INFO L93 Difference]: Finished difference Result 211 states and 282 transitions. [2024-11-23 23:00:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:00:33,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:00:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:33,367 INFO L225 Difference]: With dead ends: 211 [2024-11-23 23:00:33,367 INFO L226 Difference]: Without dead ends: 209 [2024-11-23 23:00:33,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:00:33,369 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 119 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:33,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 569 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:00:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-23 23:00:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 163. [2024-11-23 23:00:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.212962962962963) internal successors, (131), 110 states have internal predecessors, (131), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 231 transitions. [2024-11-23 23:00:33,395 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 231 transitions. Word has length 143 [2024-11-23 23:00:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:33,396 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 231 transitions. [2024-11-23 23:00:33,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 231 transitions. [2024-11-23 23:00:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:00:33,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:33,398 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:33,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:00:33,398 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:33,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1197353308, now seen corresponding path program 1 times [2024-11-23 23:00:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41416438] [2024-11-23 23:00:33,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:36,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:36,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41416438] [2024-11-23 23:00:36,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41416438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:36,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:36,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:00:36,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919133266] [2024-11-23 23:00:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:36,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:00:36,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:36,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:00:36,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:00:36,744 INFO L87 Difference]: Start difference. First operand 163 states and 231 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:38,418 INFO L93 Difference]: Finished difference Result 234 states and 309 transitions. [2024-11-23 23:00:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:00:38,419 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:00:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:38,422 INFO L225 Difference]: With dead ends: 234 [2024-11-23 23:00:38,422 INFO L226 Difference]: Without dead ends: 232 [2024-11-23 23:00:38,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:00:38,423 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 97 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:38,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 723 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:00:38,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-23 23:00:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 163. [2024-11-23 23:00:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.212962962962963) internal successors, (131), 110 states have internal predecessors, (131), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 231 transitions. [2024-11-23 23:00:38,463 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 231 transitions. Word has length 143 [2024-11-23 23:00:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:38,464 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 231 transitions. [2024-11-23 23:00:38,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 231 transitions. [2024-11-23 23:00:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:00:38,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:38,466 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:38,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:00:38,466 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:38,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash -519141980, now seen corresponding path program 1 times [2024-11-23 23:00:38,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086415831] [2024-11-23 23:00:38,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:38,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:42,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086415831] [2024-11-23 23:00:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086415831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:42,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:42,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:00:42,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385961828] [2024-11-23 23:00:42,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:42,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:00:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:42,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:00:42,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:00:42,062 INFO L87 Difference]: Start difference. First operand 163 states and 231 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:43,027 INFO L93 Difference]: Finished difference Result 239 states and 315 transitions. [2024-11-23 23:00:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:00:43,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:00:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:43,030 INFO L225 Difference]: With dead ends: 239 [2024-11-23 23:00:43,030 INFO L226 Difference]: Without dead ends: 237 [2024-11-23 23:00:43,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:00:43,031 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 101 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:43,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 562 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:00:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-23 23:00:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 174. [2024-11-23 23:00:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 119 states have (on average 1.218487394957983) internal successors, (145), 121 states have internal predecessors, (145), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 245 transitions. [2024-11-23 23:00:43,066 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 245 transitions. Word has length 143 [2024-11-23 23:00:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:43,067 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 245 transitions. [2024-11-23 23:00:43,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 245 transitions. [2024-11-23 23:00:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:00:43,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:43,071 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:43,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:00:43,071 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:43,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -517294938, now seen corresponding path program 1 times [2024-11-23 23:00:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574432325] [2024-11-23 23:00:43,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:45,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574432325] [2024-11-23 23:00:45,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574432325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:45,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:45,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:00:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792151589] [2024-11-23 23:00:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:45,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:00:45,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:45,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:00:45,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:00:45,592 INFO L87 Difference]: Start difference. First operand 174 states and 245 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:46,449 INFO L93 Difference]: Finished difference Result 222 states and 296 transitions. [2024-11-23 23:00:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:00:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:00:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:46,453 INFO L225 Difference]: With dead ends: 222 [2024-11-23 23:00:46,453 INFO L226 Difference]: Without dead ends: 220 [2024-11-23 23:00:46,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:00:46,454 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 91 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:46,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 582 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:00:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-23 23:00:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 170. [2024-11-23 23:00:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 115 states have (on average 1.208695652173913) internal successors, (139), 117 states have internal predecessors, (139), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 23:00:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 239 transitions. [2024-11-23 23:00:46,489 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 239 transitions. Word has length 143 [2024-11-23 23:00:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:46,489 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 239 transitions. [2024-11-23 23:00:46,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:00:46,490 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 239 transitions. [2024-11-23 23:00:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:00:46,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:46,492 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:46,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:00:46,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:46,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -498135772, now seen corresponding path program 1 times [2024-11-23 23:00:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590706961] [2024-11-23 23:00:46,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:00:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590706961] [2024-11-23 23:00:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590706961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:58,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:58,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:00:58,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038461170] [2024-11-23 23:00:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:58,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:00:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:58,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:00:58,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:00:58,059 INFO L87 Difference]: Start difference. First operand 170 states and 239 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:01:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:02,657 INFO L93 Difference]: Finished difference Result 311 states and 436 transitions. [2024-11-23 23:01:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:01:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:01:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:02,665 INFO L225 Difference]: With dead ends: 311 [2024-11-23 23:01:02,665 INFO L226 Difference]: Without dead ends: 309 [2024-11-23 23:01:02,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:01:02,666 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 72 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:02,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 475 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:01:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-23 23:01:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 293. [2024-11-23 23:01:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 186 states have (on average 1.1989247311827957) internal successors, (223), 189 states have internal predecessors, (223), 98 states have call successors, (98), 8 states have call predecessors, (98), 8 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:01:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 419 transitions. [2024-11-23 23:01:02,736 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 419 transitions. Word has length 143 [2024-11-23 23:01:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:02,737 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 419 transitions. [2024-11-23 23:01:02,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:01:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 419 transitions. [2024-11-23 23:01:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:01:02,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:02,740 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:02,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:01:02,741 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:02,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash -496288730, now seen corresponding path program 1 times [2024-11-23 23:01:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:02,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300573099] [2024-11-23 23:01:02,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:01:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300573099] [2024-11-23 23:01:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300573099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:15,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:15,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:01:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296794406] [2024-11-23 23:01:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:15,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:01:15,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:15,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:01:15,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:01:15,219 INFO L87 Difference]: Start difference. First operand 293 states and 419 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:01:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:19,563 INFO L93 Difference]: Finished difference Result 309 states and 434 transitions. [2024-11-23 23:01:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:01:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 143 [2024-11-23 23:01:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:19,566 INFO L225 Difference]: With dead ends: 309 [2024-11-23 23:01:19,566 INFO L226 Difference]: Without dead ends: 307 [2024-11-23 23:01:19,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:01:19,568 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 113 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:19,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 418 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:01:19,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-23 23:01:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 293. [2024-11-23 23:01:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 186 states have (on average 1.1989247311827957) internal successors, (223), 189 states have internal predecessors, (223), 98 states have call successors, (98), 8 states have call predecessors, (98), 8 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:01:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 419 transitions. [2024-11-23 23:01:19,642 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 419 transitions. Word has length 143 [2024-11-23 23:01:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:19,642 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 419 transitions. [2024-11-23 23:01:19,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:01:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 419 transitions. [2024-11-23 23:01:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:01:19,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:19,644 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:19,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:01:19,644 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:19,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:19,645 INFO L85 PathProgramCache]: Analyzing trace with hash 181922598, now seen corresponding path program 1 times [2024-11-23 23:01:19,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:19,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868272310] [2024-11-23 23:01:19,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:19,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:01:25,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:25,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868272310] [2024-11-23 23:01:25,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868272310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:25,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:25,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:01:25,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489449971] [2024-11-23 23:01:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:25,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:01:25,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:25,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:01:25,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:01:25,261 INFO L87 Difference]: Start difference. First operand 293 states and 419 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:01:31,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:31,323 INFO L93 Difference]: Finished difference Result 348 states and 478 transitions. [2024-11-23 23:01:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:01:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:01:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:31,327 INFO L225 Difference]: With dead ends: 348 [2024-11-23 23:01:31,327 INFO L226 Difference]: Without dead ends: 346 [2024-11-23 23:01:31,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:01:31,329 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 48 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:31,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 502 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:01:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-23 23:01:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 294. [2024-11-23 23:01:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 187 states have (on average 1.1925133689839573) internal successors, (223), 190 states have internal predecessors, (223), 98 states have call successors, (98), 8 states have call predecessors, (98), 8 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:01:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 419 transitions. [2024-11-23 23:01:31,396 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 419 transitions. Word has length 143 [2024-11-23 23:01:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:31,397 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 419 transitions. [2024-11-23 23:01:31,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:01:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 419 transitions. [2024-11-23 23:01:31,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 23:01:31,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:31,399 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:31,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:01:31,400 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:31,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash 183769640, now seen corresponding path program 1 times [2024-11-23 23:01:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:31,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992686442] [2024-11-23 23:01:31,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:31,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:01:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992686442] [2024-11-23 23:01:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992686442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:37,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:37,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:01:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233998292] [2024-11-23 23:01:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:37,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:01:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:37,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:01:37,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:01:37,434 INFO L87 Difference]: Start difference. First operand 294 states and 419 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:01:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:39,745 INFO L93 Difference]: Finished difference Result 296 states and 420 transitions. [2024-11-23 23:01:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:01:39,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143 [2024-11-23 23:01:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:39,749 INFO L225 Difference]: With dead ends: 296 [2024-11-23 23:01:39,749 INFO L226 Difference]: Without dead ends: 294 [2024-11-23 23:01:39,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:01:39,750 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 54 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:39,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 398 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:01:39,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-23 23:01:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 284. [2024-11-23 23:01:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 177 states have (on average 1.1807909604519775) internal successors, (209), 180 states have internal predecessors, (209), 98 states have call successors, (98), 8 states have call predecessors, (98), 8 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:01:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 405 transitions. [2024-11-23 23:01:39,805 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 405 transitions. Word has length 143 [2024-11-23 23:01:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:39,806 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 405 transitions. [2024-11-23 23:01:39,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:01:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 405 transitions. [2024-11-23 23:01:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-23 23:01:39,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:39,810 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:39,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:01:39,810 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:39,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2018225982, now seen corresponding path program 1 times [2024-11-23 23:01:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:39,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770252288] [2024-11-23 23:01:39,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:39,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-23 23:01:42,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:42,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770252288] [2024-11-23 23:01:42,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770252288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:01:42,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008616761] [2024-11-23 23:01:42,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:42,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:01:42,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:01:42,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:01:42,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b9fea-6bc9-4403-803c-2da0587a4fec/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:01:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:42,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:01:42,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 2158 proven. 2 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2024-11-23 23:04:49,286 INFO L312 TraceCheckSpWp]: Computing backward predicates...